the teacher's aides, rachel and anne marie. and teacher lauren rousseau, whose father said she died with her little kids. and victoria soto, whose family said it was clear when she was found that she was trying to shield her first grade students. >> and there's kids now that will be able to say that they're here today because she sacrificed her life so they could live another day. >> reporter: david muir, abc news, newtown, connecticut. >> what a moment for that father to stand up to the mikes and address the world like that. incredibly nowerful, the strength he had to do that. >>> schools around the country are reviewing school security. administrators have pledged to have extra police and guidance counselors on hand as students return to the classroom for the first time since the shooting. >> two school districts in pittsburgh have been given special permission to arm their security guards in light of the shooting. >>> and with guns now at the center of so much debate, some facts here. on black friday, the fbi did background